A New Real-time Estimation Method of Area’s Automatic Generation Control Logic Gains Allowing for Control Performance Penalty

Abstract:- The setting of area’s automatic generation control (AGC) logic gains makes a strong impact on its control performance. Due to the limitation on the capability of computer and the robustness of algorithm, AGC logic gains generally keep unchanged within each economic dispatching control (EDC) cycle, without consideration of control performance penalty, as well as nonlinearity, time-variation and uncertainty in generating unit, which restrains the improvement of area’s control performance to some extent. Based on weight least square theory, allowing for control lag and the factors mentioned above, a real-time estimation method of AGC logic gains within each EDC cycle is presented in this paper. Its main objective is to eliminate the error between expected power and actual power of generating unit. The simulation results from a two-area power system demonstrate that it is feasible and effective